EP0917640A1 - Rotary drum for drying pourable goods - Google Patents
Rotary drum for drying pourable goodsInfo
- Publication number
- EP0917640A1 EP0917640A1 EP97937538A EP97937538A EP0917640A1 EP 0917640 A1 EP0917640 A1 EP 0917640A1 EP 97937538 A EP97937538 A EP 97937538A EP 97937538 A EP97937538 A EP 97937538A EP 0917640 A1 EP0917640 A1 EP 0917640A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- internals
- drum
- pockets
- rotary drum
- section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
- F26B11/02—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles
- F26B11/04—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis
- F26B11/0404—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis with internal subdivision of the drum, e.g. for subdividing or recycling the material to be dried
- F26B11/0409—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis with internal subdivision of the drum, e.g. for subdividing or recycling the material to be dried the subdivision consisting of a plurality of substantially radially oriented internal walls, e.g. forming multiple sector-shaped chambers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
- F26B11/02—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles
- F26B11/04—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis
- F26B11/0463—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis having internal elements, e.g. which are being moved or rotated by means other than the rotating drum wall
- F26B11/0477—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis having internal elements, e.g. which are being moved or rotated by means other than the rotating drum wall for mixing, stirring or conveying the materials to be dried, e.g. mounted to the wall, rotating with the drum
Definitions
- the invention relates to a rotary drum for drying free-flowing material according to the preamble of claim 1.
- Heated rotary drums are used to dry free-flowing material, especially when drying wood shavings and strands.
- the material and the drying gas are fed in at the inlet of the rotary drum and the dried material and the drying gas are drawn off at the outlet.
- Cross internals are also known from DE-B 23 62 725 and from DE-B 29 1 1 137. They are not well suited for drying strands, 5 to 50 mm wide and 75 to 150 mm long wooden parts from which OSB boards are made.
- a rotary drum with densely arranged cross fittings such as is used for drying wood shavings, would easily clog when drying strands. If, on the other hand, the distance between the cross fittings is increased, the heat transfer from the drying gas to the material becomes too low. In addition, they have the disadvantage of relatively high manufacturing and installation costs.
- trickle internals for a rotary drum are described in ⁇ er DE-B 18 04 154. These trickle internals have radially inserted, partially permeable cell walls that divide the cross section of the drum into sectors that are the same as one another. which are continuously connected to one another via openings.
- the cell walls are equipped with webs on their rear side in the sense of the direction of rotation of the drum, which are arranged on the walls approximately perpendicular and parallel to the drum axis.
- lifting vane webs are arranged on the inner periphery of each sector. With this arrangement, the goods trickle from the fixtures of a sector at almost the same time. In the last part of the drum revolution, the sectors are therefore only slightly filled. The distribution of the material over the cross section of the drum is uneven.
- the object of the invention is to develop a rotary drum for drying free-flowing material according to the preamble of claim 1, which is suitable for drying wood chips and drying beaches, good heat transfer from
- Drying gas is enabled on the goods and their manufacturing and assembly costs are at least not higher than that of cross fittings.
- a rotary drum according to the invention is particularly suitable for drying wood chips, beaches and chip material with long chips, but also for drying other, free-flowing material.
- the internals extend from the circumference in the direction
- Drum center in the form of a beam over a larger area of the drum radius.
- the range is at least 60% and at most 85% of the drum radius.
- radiating fittings are somewhat cheaper to manufacture.
- radiating internals can be made from folded sheets, for example.
- the radial internals if they consist of one part, can only be attached to the circumference of the rotating drum. They can also consist of two parts, the outer part being attached to the circumference of the rotating drum and the inner part inside, for example on an inner tube. In both cases, the assembly is easier than that of cross internals.
- the material is broken down into several sub-piles by the radiation-shaped internals.
- the extension of the internals over 60 to 85% of the drum radius enables a large installation area.
- the larger the installation area the sooner the surface of the goods and the dwell time of the goods in the rotating drum can be increased, and the better the heat transfer. In the case of radial installations, there is also a faster one
- the radial internals form at least two pockets from the circumference to the center of the drum.
- a pocket is arranged in relation to one another from two opening angles that open in the direction of rotation, for example 90 degrees
- the first section of a pocket is often arranged approximately radially.
- the first section of the second pocket either directly, in the case of one-piece radial internals, or after a small, for. B. bridged by a baffle, the first section of the second pocket.
- the second or, if there are several pockets, the last pocket can be used connect another section.
- the training with pockets and a further section leads to a cascade-shaped formation of the radial internals.
- the pockets further divide the goods and, when they trickle out of the pockets during the rotational movement, they are distributed over the drum cross section. They reduce the free fall distances and ensure that the goods is circulated and loosened up
- the course of the radial internals begins approximately on the radial jet through their attachment point on the circumference and continues through the formation of the pockets in front of the radial jet. If the drum cross-section is divided into sectors delimited by the attachment points, the radial internals on their way to the middle of the drum overlap at least Half of their sector in front of the radial jet In particular with a large number of radiating internals, they can sweep over the entire sector and protrude towards the middle of the drum into the next sector. This course of the radial internals causes their pockets to be emptied one after the other during operation, in particular that good trickles out of the pockets even in half the drum cross-section in the direction of rotation
- Structurally simple and thus easy to manufacture and assemble are one-piece, radiator-shaped internals each consisting of a mounting plate according to claim 2 , one in the middle and one in the end area, connected to one another by circularly arranged connecting pieces. Through these connecting pieces, knobs that can form when drying long, low-density beaches are also loosened or good parts adhering to one another are detached diameter
- the arrangement of one or more rings according to claim 3, for example at the beginning, in the middle and at the end of a set, to which the ends of all radiating internals or the ends of a part of the same length are attached, serves for further stabilization.
- the lifting blades are arranged at a slightly positive or at a negative angle to the radial jet and are flat or angled in the direction of rotation.
- a displacement of the radiating internals of sets arranged one behind the other, for example by half the sector width, leads to a shifting of the goods, thus to an increase in the residence time and to an improvement in the heat transfer.
- baffle plates in front of or behind a set of radial
- a baffle plate can be designed as a round, central disc or as a middle or outer ring, extends the dwell time by stowing the goods.
- the trickling of the material out of the pockets can be varied even more.
- the emptying of the different pockets can be pulled apart better in time, so that the distribution of the goods trickling through the cross section is even more homogeneous.
- Baffles of different lengths with some of the baffles projecting closer to the middle of the drum than the others, have the advantage that the material is evenly distributed in the middle of the drum without the risk of clogging.
- the features of claims 9 to 11 are particularly suitable for wood shavings and beaches and goods which have a similar drying and trickling behavior as this.
- Opening angle of the pockets from 70 to 140 degrees according to claim 9 position angle of the pockets from 10 to -30 degrees to the radial beam, wherein as the position angle the angle between the radial beam is defined by the upper edge of the first section and the first section of a pocket and the tracing the position angle is based on the direction of rotation, according to claim 10 and the heights and widths of the pocket, which are determined by the lengths of the first and second sections, according to claim 11, enable a homogeneous distribution of the material flowing through the cross section.
- Figure 1 is a process diagram of a plant for drying wood chips or beaches.
- FIG. 2 shows an interrupted longitudinal section through a rotating drum of an example 1 for drying beaches
- FIGS. 3, 4, 5 and 6 show cross sections A-A, B-B, C-C, D-D through the rotating drum at the locations marked in FIG. 2.
- FIG. 7 shows a cross section through a rotating drum of an example 2 for drying wood chips.
- a plant for drying wood chips or strands has a combustion chamber 1, a mixing chamber 2, a flow tube 3, a rotating drum 4, and a cyclone 5.
- a wet material feed 10 and a coarse material lock 11 both on Power pipe 3, and a dry goods discharge 12 on the cyclone 5.
- the rotary drum 4 is divided into an inlet, a middle part 13, and an outlet, the inlet a first part 14 with a diameter smaller than the drum diameter of the middle part 13 and a second, conically widening part 15 and the outlet a first have conically tapering part 16 and a second part 17 with a smaller diameter.
- a bearing 19 has, for example, bearings with rollers.
- the rotary drum 4 can also be designed without conically widening or tapering parts 15, 16. At the end of the rotary drum 4, a drop housing for the dried material can be provided.
- the rotary drum 4 is arranged horizontally in Examples 1 and 2. It can also be inclined in the conveying direction.
- the material to be dried is fed to the flow pipe 3 through the wet material feed 10, in the flow pipe 3 by the drying gases originating from the combustion chamber 1 and mixed with recirculated vapors in the mixing chamber 2 and pre-dried, for example at 1 to 10 revolutions per minute , rotating rotary drum 4 dried to final moisture.
- the dried material is drawn off in cyclone 5. Part of the vapors is returned to the mixing chamber 2, the rest leaves the system, possibly after cleaning, through the chimney 8.
- the system can be designed without a flow tube 3.
- a rotary drum 4 for drying strands has a double jacket 20 in the inlet and distributed in the inlet and outlet over the circumference, internals 21, 22 designed as lifting and transport blades, the internals 21 in the second part 15 of the inlet being arranged in a slightly helical manner.
- the rotary drum 4 can also have a simple jacket.
- the rotary drum 4 there is at least one set 23 of internals distributed in the direction of the drum axis 24 and distributed over the circumference.
- the Internals of a set 23 project radially from the circumference of the rotary drum 4 towards the center of the drum.
- the area covered by the internals is 60 to 85% of the drum radius.
- the radial internals run essentially in the direction of rotation 25 in front of a radial jet passing through their fastening point 26 on the circumference and form at least two pockets in their course from the circumference to the center of the drum.
- the radiating internals each consist of a mounting plate, the axial length of which corresponds to the length of a set 23.
- a total of twelve cascade-shaped mounting plates namely six of two different types A, B, are alternately distributed over the circumference.
- Type A mounting plates are longer and form more pockets than type B.
- the type A mounting plates form three pockets in their course and extend over an area of 75% of the drum radius.
- a type A mounting plate is divided into seven sections 27, 28, 29, 30, 31, 32 and 33, each arranged at an angle to one another, the mounting plate being fastened to the circumference with section 27 and with the last section 33 in the middle of the drum protrudes.
- Sections 27 and 28 form the first and second sections of the first pocket
- sections 29 and 30 form the first and second sections of the second pocket
- sections 31 and 32 form the first and second sections of the third pocket.
- the type B mounting plates form two pockets and extend over a range of 64% of the drum radius.
- the type B mounting plate is divided into five sections 34, 35, 36, 37 and 38, the mounting plate being attached to the circumference with the section 34 and projecting into the middle of the drum with the last section 38.
- Sections 34 and 35 form the first and second sections of the first pocket and sections 36 and 37 form the first and second sections of the second pocket.
- the opening angles of the bags are 70 to 140 degrees.
- the opening angle of the bags are 70 to 140 degrees.
- Pockets of the type A mounting plate differ only slightly and are in the range of 90 degrees.
- the pockets of the type B mounting plate differ more, at least one opening angle is greater than 100 degrees.
- the mounting plates are shaped in such a way that the pockets are arranged at a position angle of 10 degrees to -30 degrees to the radial beam in relation to the direction of rotation, with inner pockets having a more negative position angle. If the opening angles of the pockets of a mounting plate, as with Type A, differ little, the position angle of the pockets from outside to inside is always more negative.
- the lengths of the first portions of the pockets are 0.15 to 0.25 times and the lengths of the second portions of the pockets are 0.05 to 0.15 times the drum radius.
- the three pockets of the type A mounting plate have opening angles of 95 degrees, 90 degrees and 90 degrees and are arranged under position angles of 0 degrees, -7 degrees and -13 degrees.
- the lengths of their first sections 27, 29, 31 are each 0.21 times and that of their second sections 28, 30, 32 0.13 times, 0.1 times and 0.05 times the drum radius .
- the last section 33 of the mounting plate is arranged at a position angle of -20 degrees. Its length is 0.11 times the drum radius.
- the two pockets of the type B mounting plate have opening angles of 95 degrees and 118 degrees and are arranged at angles of 0 degrees and -7 degrees.
- the lengths of their first sections are 0.21 times and 0.15 times and the lengths of their second sections both 0.13 times the drum radius.
- the last section 38 is arranged at an angle of 2 degrees. Its length is 0.11 times the drum radius.
- This design of the mounting plates of both types A, B begins their course on the radial beam through the attachment point 26 and continues by forming the pockets in front of the radial beam. If the drum cross-section is divided into twelve sectors delimited by the attachment points 26, the installation sheets on their way to the middle of the drum sweep two thirds of their sector, in the case of type A, and half of their sector, in the case of type B, in front of the radial jet.
- the mounting plates of a set 23 are connected to one another at three locations, one in the direction of conveyance 39 in the beginning area, in the middle and in the end area of the set 23, by circularly arranged connecting pieces 40.
- Pipe sections with a round cross section are used as connecting pieces 40.
- the connecting pieces 40 are at a distance of 40 to 60% of the drum radius Drum axis 24, arranged within the outer two pockets of the mounting plates. In this example, they are arranged near the second pocket of the type A and B mounting plates on a half drum radius.
- a set 23 also has three rings 41 arranged centrally at the beginning, in the middle and at the end of the set 23, to which the ends of the sections 33 of the longer type A internals are fastened.
- the radius of the rings 41 is 25 to 30% of the drum radius, depending on the length of the mounting plates attached to them.
- Twelve straight lifting blades 42 are arranged between the mounting plates at a position angle of, for example, -9 degrees.
- a circumferential ring 43 located at the end of the set 23 can be seen in FIGS.
- zones 44 in which twelve curved lifting vanes 45, which are angled in the direction of rotation, are attached on the circumference.
- the length of a zone 44 is approximately 20% of the length of a set 23.
- baffle plates 46, 47, 48 are inserted in the rotary drum 4, the annular baffle plate 46 (FIG. 4) covering an area between the ring 41 and approximately the center of the second pockets of the mounting plates in the conveying direction 39 in front of the second set 23 and the two central baffle plates 47, 48, which cover the central region up to the ring 41, are arranged behind the second and behind the seventh set 23.
- the arrangement of the baffle plates 46, 47, 48 in the rotary drum 4 can vary. However, one or more baffle plates are always arranged in the first three sets 23 of a rotary drum. In rotary drums 4 with a larger diameter, the baffle plates are arranged further forward than in those with a smaller diameter. Baffle plates, which are designed as an outer ring, are also used.
- the material to be dried is divided in the inlet by the baffles 21, through the baffles again and again moved transversely to the conveying direction 39, homogeneously distributed over the cross section and dried by contact with the drying gas.
- the displacement of the mounting plates of different sets 23 and the baffle plates 46, 47, 48 causes a long dwell time.
- a rotating drum 4 of example 2 for drying wood chips is essentially constructed like a rotating drum 4 of example 1. It differs from it in that a total of twenty cascade-shaped mounting plates, ten each of two different types A and B, are installed. Type A mounting plates are also longer than Type B, with Type A mounting plates extending over an area of 82% and type B mounting plates over a range of 73% of the drum radius. The mounting plates of both types A and B form two pockets, for which they are each divided into five sections 49, 50, 51 52, 53 (type A) and 54, 55, 56, 57, 58 (type B).
- the two pockets of the type A mounting plate have opening angles of 83 degrees and 90 degrees and are arranged at angles of 0 degrees and -1.5 degrees.
- the lengths of their first sections 49 and 51 are 0.27 times and 0.30 times and those of their second sections 50 and 52 are 0.10 times and 0.08 times the drum radius.
- the last section 53 of the mounting plate is arranged at a position angle of -8 degrees. Its length is 0.28 times the drum radius.
- the two pockets of the type B mounting plate also have opening angles of 83 degrees and 90 degrees and are arranged at angles of 0 and -2 degrees.
- the lengths of their first sections 54 and 56 are 0.19 times and 0.30 times and the lengths of the second sections 55 and 57 are 0.10 times and 0.09 times Drum radius.
- the last section 38 is arranged at a position angle of 5 degrees. Its length is 0.27 times the drum radius.
- the opening angles of the pockets of both types A and B are identical to one another and in the range of 90 degrees.
- the second pockets are arranged further towards the drum axis 24 than those of type B.
- Connecting pieces 59 are arranged outside the second sections 52 and 57 of the second pockets of the mounting plates at a distance of approximately 60% of the drum radius from the drum axis 24.
- the sets 23 each have an inner tube 61, which is connected to the rings 60 by struts 62.
- the type A mounting plates cover the entire sector in front of their radial jet and those of type B cover approximately two thirds of the sector in front of their radial jet.
- Two types C and D of lifting blades 63, 64 are arranged alternately between the mounting plates, the lifting blades 63 of type C being straight and of type D being angled in the conveying direction 39.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Drying Of Solid Materials (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19631998A DE19631998C1 (en) | 1996-08-08 | 1996-08-08 | Rotary drum drying free-flowing material |
DE19631998 | 1996-08-08 | ||
PCT/EP1997/004185 WO1998006989A1 (en) | 1996-08-08 | 1997-07-31 | Rotary drum for drying pourable goods |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0917640A1 true EP0917640A1 (en) | 1999-05-26 |
EP0917640B1 EP0917640B1 (en) | 2000-03-22 |
Family
ID=7802113
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97937538A Expired - Lifetime EP0917640B1 (en) | 1996-08-08 | 1997-07-31 | Rotary drum for drying pourable goods |
Country Status (6)
Country | Link |
---|---|
US (1) | US6119363A (en) |
EP (1) | EP0917640B1 (en) |
CA (1) | CA2263178C (en) |
DE (2) | DE19631998C1 (en) |
ES (1) | ES2145629T3 (en) |
WO (1) | WO1998006989A1 (en) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10111613A1 (en) | 2001-03-10 | 2002-09-12 | Buettner Ges Fuer Trocknungs U | Rotary drum for drying free-flowing goods |
US6584699B2 (en) * | 2001-05-15 | 2003-07-01 | Ronning Engineering, Co., Inc. | Three stage single pass high density drying apparatus for particulate materials |
ES2672102T3 (en) | 2006-10-04 | 2018-06-12 | Dieffenbacher GmbH Maschinen- und Anlagenbau | Drum or drum segment for a device for drying pourable material and process for the production of a drum or a drum segment |
DE102007031081B4 (en) | 2007-07-04 | 2015-08-06 | Büttner Energie- und Trocknungstechnik GmbH | rotary drum |
BE1017939A3 (en) † | 2008-02-27 | 2009-12-01 | Majast Bvba | DEVICE FOR DRYING A WATER-MIXING MIXTURE. |
US20110061837A1 (en) * | 2009-09-13 | 2011-03-17 | US Solar Holdings LLC | Systems and methods of thermal energy storage |
US9382672B2 (en) * | 2010-12-06 | 2016-07-05 | Astec, Inc. | Apparatus and method for dryer performance optimization system |
DE102013209607A1 (en) * | 2013-05-23 | 2014-11-27 | Hauni Maschinenbau Ag | Drum dryer for drying tobacco, and corresponding drying method |
CN104949480B (en) * | 2015-06-10 | 2017-08-04 | 上海市动物无害化处理中心 | A kind of high efficiency drying device for animal harmless treatment material |
DE202015105780U1 (en) * | 2015-10-30 | 2015-11-11 | Josef Fliegl jun. | drying device |
CN107763999B (en) * | 2017-12-08 | 2024-03-22 | 郑州市同鼎机械设备有限公司 | Break up heat collection frame and have this sand drying machine who breaks up heat collection frame |
Family Cites Families (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE423753C (en) * | 1926-01-09 | Eduard Koenigs | Cell sheet with throwing bar for drying drums | |
DE17571C (en) * | G. v. GOERNE, Major a. D. in Hangelsberg | Innovation in apparatus for drying lignite granules | ||
DE288896C (en) * | ||||
FR626978A (en) * | 1926-04-07 | 1927-09-23 | Continuous automatic drier for casein or any other product | |
DE530272C (en) * | 1929-03-28 | 1931-07-25 | Elsbeth Verw Zarniko Geb Witti | Trickle wheels for drying, cooling, ventilation and mixing |
GB351130A (en) * | 1930-04-08 | 1931-06-25 | Fritz Haas | Improvements in or connected with rotatable drying drums of the class divided into compartments |
US2341101A (en) * | 1941-01-18 | 1944-02-08 | Dewey L Howard | Method and apparatus for dehydrating natural plants and grasses |
US2483630A (en) * | 1946-02-01 | 1949-10-04 | Link Belt Co | Rotary drier or cooler |
US2840922A (en) * | 1956-07-18 | 1958-07-01 | Link Belt Co | Rotary cooler |
US3145979A (en) * | 1962-08-09 | 1964-08-25 | Smidth & Co As F L | Rotary drums |
DE1230703B (en) * | 1963-10-03 | 1966-12-15 | Haas Friedrich Maschf | Device for dry purification of limestone-clay mixture |
DE1804154B2 (en) * | 1968-10-19 | 1976-12-16 | Klöckner-Humboldt-Deutz AG, 5000Köln | RIBBON BUILT-IN A ROTATING DRUM, IN PARTICULAR FOR DRUM DRYERS |
US3950861A (en) * | 1974-11-29 | 1976-04-20 | Stearns-Roger Corporation | Rotary dryer for stringy material |
DE2911137B1 (en) * | 1979-03-21 | 1980-06-12 | Hans-Juergen Dipl-Ing Krombach | Method and device for drying free-flowing material |
US4338732A (en) * | 1980-12-15 | 1982-07-13 | Allis-Chalmers Corporation | Lifter cage for asphalt plant, dryers and drum mixers |
US4628614A (en) * | 1983-09-26 | 1986-12-16 | Thompson Stanley P | Flighting for horizontal dryers |
DE3345118C1 (en) * | 1983-12-14 | 1985-02-14 | Salzgitter Maschinen Und Anlagen Ag, 3320 Salzgitter | Device for drying and, where necessary, cooling sugar using a rotating tube |
US4566376A (en) * | 1984-06-08 | 1986-01-28 | Webb Wells A | System for producing crisp fruit chips |
NL8403407A (en) * | 1984-11-08 | 1986-06-02 | Vandenbroek Int Bv | ROTATABLE DRYER. |
DK160846C (en) * | 1988-11-10 | 1991-10-07 | Atlas Ind As | ROTATING TOURS AND USE THEREOF |
US5080581A (en) * | 1991-04-10 | 1992-01-14 | Combustion Design Corporation | Method and apparatus for drying waste materials |
CA2017953A1 (en) * | 1990-05-25 | 1991-11-25 | Richard L. Ronning | High density single pass heat exchanger for drying fragmented moisture bearing products |
US5305533A (en) * | 1993-01-27 | 1994-04-26 | Alexander Donald J | Combined direct and indirect rotary dryer with reclaimer |
-
1996
- 1996-08-08 DE DE19631998A patent/DE19631998C1/en not_active Expired - Fee Related
-
1997
- 1997-07-31 ES ES97937538T patent/ES2145629T3/en not_active Expired - Lifetime
- 1997-07-31 WO PCT/EP1997/004185 patent/WO1998006989A1/en active IP Right Grant
- 1997-07-31 DE DE59701330T patent/DE59701330D1/en not_active Expired - Fee Related
- 1997-07-31 EP EP97937538A patent/EP0917640B1/en not_active Expired - Lifetime
- 1997-07-31 CA CA002263178A patent/CA2263178C/en not_active Expired - Fee Related
- 1997-07-31 US US09/242,181 patent/US6119363A/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO9806989A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE19631998C1 (en) | 1997-10-09 |
CA2263178C (en) | 2002-07-23 |
ES2145629T3 (en) | 2000-07-01 |
US6119363A (en) | 2000-09-19 |
WO1998006989A1 (en) | 1998-02-19 |
DE59701330D1 (en) | 2000-04-27 |
CA2263178A1 (en) | 1998-02-19 |
EP0917640B1 (en) | 2000-03-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE69218962T2 (en) | TURN DRUM DRYER WITH INNER BLADES | |
DE19631998C1 (en) | Rotary drum drying free-flowing material | |
EP0226987A2 (en) | Device for classifying powdery bulk material | |
DE202007007606U1 (en) | screw extractor | |
WO2004101127A1 (en) | Device for the treatment of solid substances | |
DE69703210T2 (en) | ROTATING BURNER FOR SOLID FUELS | |
DE3423521C2 (en) | ||
DE69715760T2 (en) | Countercurrent mixing drum for the treatment of asphalt concrete and operating processes | |
EP1332034B1 (en) | Ring extruder feed | |
DE2634072A1 (en) | DEVICE AND METHOD FOR HEATING AND DEWATERING A WATER-BASED SUBSTANCE | |
DE2517131C2 (en) | Device for loosening up damp, fibrous materials | |
DE2611853A1 (en) | METHOD OF DRYING AGRICULTURAL FEED AND MUDDY MATERIALS | |
DE2821637A1 (en) | FAN BALL MILL | |
DE69417434T2 (en) | DRYER WITH ADJUSTABLE DRIVE ELEMENTS | |
DE2932224C2 (en) | ||
DE2810838C3 (en) | Rotary drum for the formation of thermal treatment rooms for pyrolytic decomposition solids and liquids from old tires | |
EP0952396A2 (en) | Device for burning particulate combustible material | |
DE2253542A1 (en) | PROCEDURE AND ARRANGEMENT FOR LOWERING THE DYNAMIC PRESSURE OF THE COMBUSTION AIR ON A TURBULATOR LEADING INTO THE BURNER HEAD OF OIL FIRING UNITS | |
DE3345118C1 (en) | Device for drying and, where necessary, cooling sugar using a rotating tube | |
DE3246198C2 (en) | Method and drum for drying moist bulk materials | |
DE3516207C2 (en) | Device for treating tobacco | |
DE68905486T2 (en) | ROTATING DRYER AND RELATED DRYING SYSTEM. | |
EP0327650B1 (en) | Apparatus to clear the flame area in a rotary drum furnace using direct heating, and arrangement and construction of the shovels | |
DE10111613A1 (en) | Rotary drum for drying free-flowing goods | |
EP2654437B1 (en) | Kneading apparatus for kneading and mixing dough |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19990308 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE ES FI FR |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
17Q | First examination report despatched |
Effective date: 19990804 |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE ES FI FR |
|
ET | Fr: translation filed | ||
REF | Corresponds to: |
Ref document number: 59701330 Country of ref document: DE Date of ref document: 20000427 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2145629 Country of ref document: ES Kind code of ref document: T3 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20030626 Year of fee payment: 7 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FI Payment date: 20030704 Year of fee payment: 7 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 20030708 Year of fee payment: 7 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20040731 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20040802 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20050331 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20040802 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20080714 Year of fee payment: 12 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20100202 |